<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script type="text/javascript">
			var v1=true;  //boolean
			var v2=null;  //object
			var v3;//undefined
			var v4=Infinity;  //number
			var v5="1";//string
			var v6=Symbol();//symbol
			//var v7=12345n;//bigint
			var v8=[];//object
			var v9={};  //object
			var v10=function(){}  //function
			var v11=new Object();  //object
			var v12=0/0;  //NaN number
	
			console.log(typeof v1);
			console.log(typeof v2);
			console.log(typeof v3);
			console.log(typeof v4);
			console.log(typeof v5);
			console.log(typeof v6);
			console.log(typeof v7);
			console.log(typeof v8);
			console.log(typeof v9);
			console.log(typeof v10);
			console.log(typeof v11);
			console.log(typeof v12);
			console.log(v8 instanceof Array)
			
		</script>
	</head>
	<body>
		
	</body>
</html>
